A350155: a(n) is the greatest number of times that a laser can hit a reflector on an n X n grid. Optimal solutions for n <= 6. Reflectors are shown as '\' or '/', empty locations are '.', and the starting location of the laser is 'V'. Found by Dmitry Kamenetsky and Daniel Mathias. 21st January 2022. a(1) = 1 V \ a(2) = 6 V \\ \/ a(3) = 18 V \\\ /\/ \./ a(4) = 49 V \\\\ \\/. \/// \\// a(5) = 120 V \\\.\ /\\\\ /./\\ \/\// \\/./ a(6) = 233 V \\\/\\ \\..\\ /\//\/ .//\\. \\\\// \.\/./